:root { color-scheme: light dark; }
body { font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
       max-width: 38rem; margin: 4rem auto; padding: 0 1.25rem; }
h1 { font-size: 1.4rem; margin-bottom: .5rem; }
h2 { font-size: 1.05rem; margin-top: 1.75rem; }
.muted { opacity: .7; font-size: .9rem; }
ul { padding-left: 1.2rem; }
li { margin-bottom: .35rem; }
code { font-size: .92em; }